Source : Webster's Revised Unabridged Dictionary (1913)

Smallage \Small"age\, n. [Small + F. ache smallage. See {Ach}
   parsley.] (Bot.)
   A biennial umbelliferous plant ({Apium graveolens}) native of
   the seacoats of Europe and Asia. When deprived of its acrid
   and even poisonous properties by cultivation, it becomes
   {celery}.